Binding clamp to hold lines wound onto rolls



Jan. 4, 1944. c. szRENsEN BINDING CLAMP TO HOLD LINES WOUND ON TO ROLLS Filed March 24, 1941 Patented Jan. 4, 1944 BINDING CLAMP TO HOLD LINES WOUND ONTO ROLLS Christian Sorensen, Understed, near Saeby, Denmark; vested in the Alien Property Custodian Application March 24, 1941, Serial No. 384,985

(Cl. 18S-65.1)

2 Claims.

Spring drums are known on which a line is wound, the drum being rotated under the action of a spiral spring put under tension during unwinding, and held in various positions by a ratchet pawl which prevents the unwinding of the line by engaging a notch in a fixed part of the ar ticle. When the pawl is in gear with the notch, the line cannot be unwound by pulling it. To

release the pawl and eiiect the unwinding, a'

notch. As it is not possible to wind up a further small length of line to release the pawl from the notch, because the ring is up against the guide eye, the line cannot be unwound.

The above mentioned drawback is prevented by the present invention, which provides a binding clamp adapted to grip the line wound on to the drum. The clamp can be placed at a greater or smaller distance from the end ring, so that, when the line is to be unwound, it is possible to free enough length of line between the eye and the clamp to allow the drum to be rotated slightly in the direction to wind up the line, whereby the pawl is released from the notch and unwinding be effected normally.

The clamp according to invention consists of two bars, connected by a bolt with a spring arranged around it and so arranged that one of the bars can rock slightly on the other, one end of each bar having a hole through which the line is passed, and the hole in one bar being slightly out of register with the hole in the other bar whereby the line can be jammed between the edges of the two holes when the clamp is closed.

The drawing shows:

Figs. 1 and 2 a spring drum structure with a binding clamp according to the invention in side-View and top-View respectively,

Fig. 3 a section on the line a-a in Fig. 1, and

Figs. 4 and 5 a longitudinal section of the binding clamp and showing the clamp in two different positions, drawn to a larger scale.

The spring drum shown in the drawing, which is of known construction, comprises a base I which can be hung on a wall or the like. On the base I is xed a post 2 with a notch 3, therein and carrying a pin 4 on which is rotatably arranged the drum member 5, on which a ratchet pawl I can rock on a pivot t, said pawl when it lies in the notch 3 preventing rotation of the drum member. Inside the drum member 5 is arranged a spiral spring 3, one end of which is fixed to the post 4, and the other end to the drum member 5. On the drum is wound a line 9, which has been passed through an eye of a swivel I0 on the base I. At the free end of the line 9 is a ring II to be hung on a hook or the like, when the line is to be used for the drying of clothes. Upon unwinding the line from the drum the spring 3 will be tensioned and, when the line is slackened, the spring will rotate the drum and wind up the line. Other known line and drum mechanisms can be used.

To prevent the whole length of the line from being wound on the drum, a binding clamp is placed on the line, which clamp can be moved to different positions.

The binding clamp consists of two bars I2 and I3 interconnected by a pivot I4, which is fixed to the bar` I3 and passes through a hole I5 in the bar I2. Round the pivot I4 is arranged a helical spring I6, which holds the two bars together. One end of the bar I3 is bent slightly away from the other bar. In the other end of the bar I3 is a hole I1, and in the bar vI2 a hole I8. The line 9 is passed through both these holes, which are located not quite in register with each other, so that, when the clamp is closed as shown in Fig. 4, the line will be jammed between the edges of the two holes. If the end of the bar I3 is pressed slightly, so that it comes into the position in relation to the bar I2 shown in Fig. 5, the line 9 is no longer gripped, and it can therefore run freely through the holes Il and I8. Before the winding-up of the line commences, the clamp can be placed at a suitable place on the line 9, which can then only be wound up as far as the clamp will permit.

I claim:

1. In a spring drum and line structure, a line clamp comprising, a pair of bars disposed side by side in longitudinal contact with each other over a portion of their length each bar having a hole transversable by said line through the contacting portion, and 'a spring connection between said bars adapted to allow one bar to rock slightly on the other with separation of the contacting portions, the holes in said portions being positioned sufficiently out of register when the said portions are in contact whereby said line is gripped between the bars, but to allow said line to run freely through the holes when said bar portions are separated.

2. In a spring drum and line structure, a line clamp comprising, a pair of bars disposed side by side in longitudinal Contact with each other over a portion of their length each bar having a hole transversable by said line through the contacting portion, a pin iixed in one of said bars and extending through an opening in the other bar, a spring abutting between said pin and the l0 

